Safe, cheap, easy-to-get protective covers for 5.5mm bullets on batteries?

[desmobob]

What are you guys using?

[ray schrauwen]

I just use shrink wrap. Typically most people have batteries wired red hot female. Female positive lead and male negative. If you use a few layers of heat shrink and overhang it about 1mm over the lip and cut the negative 1/2" shorter it's pretty much impossible for them to touch accidentally. You would have to try to plug them in and to end on purpose to ever have a problem.

2 or 3 layers works well for me.

[NativePaul]

I use neon yellow 6mm/8mm silicone tube, like water line but bigger.

I bought 2m of it many years ago for under ?7 and I will be surprised if it doesn't see me out.

[lohring]

I use McMaster-Carr plastic caps. The 5/16 x 3/4 size still works on 8 mm connectors as well as smaller ones. See https://www.mcmaster.com/9753k17/

Lohring Miller

[desmobob]

Thanks for the great tips, folks. I appreciate it.

[T.S.Davis]

I use neon yellow 6mm/8mm silicone tube, like water line but bigger.

Me too. I always have it kicking around. I lose them so bad I can just snip another off the length. Works well on 6mm connectors but is a little tight. Horrible on 8mm.

Another option is screw caps. I usually take a connector into the hardware store and sift through the different sizes until I find one that slips on nice. Another great option is surgical tubing. Cut a piece to length. Fits multiple sizes. With 5.5 you could probably slide it right up onto your shrink wrap.

[denboy01]

Rubber end caps used for the carbon rods on stunt kites can be bought in various sizes too

[desmobob]

I ordered some 6mm ID/8mm OD silicone tubing in bright yellow. That ought to do the trick for me...

Thanks again,
Bob

[metrorubber]

you can try pvc heat shrink sleeves.